diff --git a/core/src/mindustry/content/Blocks.java b/core/src/mindustry/content/Blocks.java
index 615f27aaf4..a28667ab74 100644
--- a/core/src/mindustry/content/Blocks.java
+++ b/core/src/mindustry/content/Blocks.java
@@ -209,6 +209,9 @@ public class Blocks implements ContentList{
             isLiquid = true;
             cacheLayer = CacheLayer.slag;
             attributes.set(Attribute.heat, 0.85f);
+
+            lightRadius = 65f;
+            lightColor = Color.orange.cpy().a(0.4f);
         }};
 
         stone = new Floor("stone");
@@ -243,7 +246,7 @@ public class Blocks implements ContentList{
             blendGroup = basalt;
 
             emitLight = true;
-            lightRadius = 60f;
+            lightRadius = 50f;
             lightColor = Color.orange.cpy().a(0.3f);
         }};
 
diff --git a/core/src/mindustry/content/UnitTypes.java b/core/src/mindustry/content/UnitTypes.java
index 06757e39c7..ac1027e72d 100644
--- a/core/src/mindustry/content/UnitTypes.java
+++ b/core/src/mindustry/content/UnitTypes.java
@@ -419,7 +419,7 @@ public class UnitTypes implements ContentList{
                 continuous = true;
                 cooldownTime = 200f;
 
-                bullet = new ContinuousLaserBulletType(17){{
+                bullet = new ContinuousLaserBulletType(20){{
                     length = 150f;
                     hitEffect = Fx.hitMeltHeal;
                     drawSize = 420f;
@@ -430,7 +430,7 @@ public class UnitTypes implements ContentList{
 
                     shootEffect = Fx.greenLaserChargeSmall;
 
-                    incendChance = 0.02f;
+                    incendChance = 0.05f;
                     incendSpread = 5f;
                     incendAmount = 1;
 
@@ -489,7 +489,7 @@ public class UnitTypes implements ContentList{
 
                 bullet = new LaserBulletType(){{
                     length = 500f;
-                    damage = 520f;
+                    damage = 550f;
                     width = 75f;
 
                     lifetime = 65f;
diff --git a/core/src/mindustry/world/blocks/storage/CoreBlock.java b/core/src/mindustry/world/blocks/storage/CoreBlock.java
index 44004ded7e..720a32dc6f 100644
--- a/core/src/mindustry/world/blocks/storage/CoreBlock.java
+++ b/core/src/mindustry/world/blocks/storage/CoreBlock.java
@@ -101,7 +101,7 @@ public class CoreBlock extends StorageBlock{
         CoreBuild core = team.core();
         //must have all requirements
         if(core == null || (!state.rules.infiniteResources && !core.items.has(requirements))) return false;
-        return canReplace(tile.block());
+        return tile.block() instanceof CoreBlock && size > tile.block().size;
     }
 
     @Override